Dramatic acceleration by visible light and mechanism of AuPd@ZIF-8-catalyzed ammonia borane methanolysis for efficient hydrogen production

Abstract

The generation of H2 from materials having a high content of H atoms is attractive for both sustainable energy and convenient means of hydrogenation. We report that the novel synthesized...

Facile MOF Support Improvement in Synergy with Light Acceleration for Efficient Nanoalloy-Catalyzed H2 Production from Formic Acid

“…The temperature change within 2 °C was observed during the maximum reaction time (Figure S7a), and there was no significant change between gas generation catalyzed by ZIF-8@Pd 2 Ag 1 @ZIF-67 with tin paper covered and in the dark (Figure S7b). Thus, photothermalization is not the main responsible factor for the light-induced catalytic activity enhancement , of the catalyzed FA dehydrogenation reaction.…”

“…The temperature change within 2 °C was observed during the maximum reaction time (Figure S7a), and there was no significant change between gas generation catalyzed by ZIF-8@Pd 2 Ag 1 @ZIF-67 with tin paper covered and in the dark (Figure S7b). Thus, photothermalization is not the main responsible factor for the lightinduced catalytic activity enhancement 62,63 of the catalyzed FA dehydrogenation reaction. The promotional role of the plasmonic effect was verified by XPS measurements (Figure 6) in order to investigate the surface chemical compositions and valence states before and after reaction under light.…”

From sandwich complexes to dendrimers: journey toward applications to sensing, molecular electronics, materials science, and biomedicine

“…203 If these two derivatives are the most investigated ones, research has been extended to others in the liquid phase such as hydrazine borane, silanes, formic acid and other hydrocarbons. 203,204 Our group has studied a variety of these hydrogen carriers essentially using, as nanocatalyst stabilizers, either click dendrimers [205][206][207][208] or MOFs of the ZIF-8 type, [209][210][211][212][213][214][215][216] because both of these families, beside their steric effects, contain nitrogen atoms that mildly stabilize nanoparticle catalysts for optimized reactions and provide synergy in catalysis. In these reactions, one hydrogen atoms of H 2 formed is provided by the hydrogen carrier, and the other from water, which is shown by labeling experiments.…”

“…In these reactions, one hydrogen atoms of H 2 formed is provided by the hydrogen carrier, and the other from water, which is shown by labeling experiments. 215 Kinetic isotope effects and DFT calculations have provided evidence that water activation is the rate-determining step, facilitated by hydrogen bonding with the hydridic atom coming from the carrier at the nanocatalyst surface. 195 In the particular case of the nanocatalyzed hydrolysis of bis-boric acid, {B 2 (OH) 4 }, however, both hydrogen atoms of H 2 formed are coming from water, the side product being boric acid, B(OH) 3 .…”

Arene–perfluoroarene interactions in molecular cocrystals for enhanced photocatalytic activity

“…7,8 Organic photocatalytic materials research is mainly focused on copolymer compounds such as metal organic frameworks (MOFs), 9,10 covalent organic frameworks (COFs), 11,12 and two-dimensional polymers. 13 Covalent compounds have become research hotspots for photocatalytic CO 2 reduction 14,15 and hydrogen evolution, 16,17 but the uncontrollable polymerization process and complex by-products prevent their large-scale preparation and applications. On the other hand, self-assembly conditions of organic supramolecular materials are milder and more controllable, green, and economical, being booming in the photocatalytic eld.…”